FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
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6. Superheated steam at 10MPA, 400°C is flow through an
adiabatic nozzle of back pressure IMpa, and exit area of
10cm2. Find the Mass flow rate through the nozzle, the throat
area that giveMaximum mass flow rat
A steam turbine has an inlet of 2 kg/s water at 1000 kPa, 350°C and velocity of 15 m/s. The exit
is at 100 kPa, x = 1 and very low velocity. Find the specific work and the power produced.
An adiabatic turbine has an efficiency of 90%. If air is compressed from 1100kpa and 227 degree Celsius to 101kpa. Find the work done and final temperature. Sketch process on T-S diagram.
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- 4. An evaporator has R-410A at -20°C and quality 80% flowing in. The exit flow is saturated vapor at -20°C. a. Consider the heating to be a reversible process and find the specific heat transfer from the entropy balance. (Answer: 48.7 kJ/kg) b. If the heat source was at -10°C and the inlet and outlet streams still have the same properties as in a), calculate the specific entropy generation? (Answer: 7.33 J/(kg K))arrow_forward3. An adiabatic compressor takes argon from 100 kPa, 300 K to 2000 kPa. The compressor efficiency is 80%. (a) Find the outlet temperature (K) and the work (kJ/kg) (b) Find the entropy generation (kJ/kg-K)arrow_forwardH.w: nitrogen gas flows into a convergent nozzle at 200 kpa,400 K and very low velocity .it flows out of the nozzle at 100 kpa.330 K.ifthe nozzle is insulated find the exit velocity .C, for nitrogen -1.042arrow_forward
- A compressor receives R-410A as saturated vapor R-410A at 400 kPa and brings it to 2000 kPa, 60°C. Then a cooler brings it to saturated liquid at 2000 kPa (see Fig. below). Find the specific compressor work and the specific heat transfer in the cooler? A eccoi = Compressor Compressor section Cooler sectionarrow_forwardA steam turbine has an inlet of 4 kg/s water at 1000 kPa, 400 oC and velocity of 77 m/s. The exit is at 100 kPa, 150 oC and very low velocity. Find the specific work and the power produced.arrow_forwardA steam is expanded through a nozzle and the enthalphy drop per kg of steam from the initial pressure to the final pressure is 70 kJ. Neglecting the friction, find the velocity of discharge.arrow_forward
- A steam turbine has an inlet of 2 kg/s water at 1000 kPa, 350 °C and velocity of 15 m/s. The exit is at 100 kPa, 150 °C and very low velocity (assume zero). Find the specific work (kJ/kg) and the power (kW) produced.arrow_forwardAir in an ideal diesel is compresses from 8 liters to 0.15 and then expands during the constant pressure heat addition process to 0.3 L. Under cold air standard conditions, find the thermal efficiency.arrow_forwardProblem 2: A turbine accepts steam at 3000kPa and 800 °C and leaves at 100 kPa with a quality of 30%. If the Criss flow rate is 5 he's determine the power puput. (Neelect kinetic & potential energy changes. Neglect heat kg/sarrow_forward
- The turbine section in a jet engine receives gas (assume air) at 1200 K, 800 kPa with an ambient atmosphere at 80 kPa. The turbine is followed by a nozzle open to the atmosphere and all the turbine work drives a compressor receiving air at 85 kPa, 270 K with the same flow rate. Find the turbine exit pressure P₂ so the nozzle has an exit velocity of 800 m/s.arrow_forward2. 1 kg/s steam enters the turbine at 2.5MPa and 500C while leaving at 10kPa with 89% quality. The pump exit condition is at 2.5 MPa and 50C. Find the turbine work output and heat added in the boiler in kW. (20 points)arrow_forwardThermodynamics sketch and label the turbine. Sketch and label the process on a T-s diagram also mentions all numbers on the process please. Thanks 7.56 A steam turbine has an inlet of 2 kg/s water at 1000 kPa, 400°C with velocity of 15 m/s. The exit is at 100 kPa, 150°C and very low velocity. Find the power produced and the rate of entropy generation.arrow_forward
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